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State two conditions for the rusting of ...

State two conditions for the rusting of iron.

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Rusting of iron is

The rusting of iron nail

What is meant by the rusting of iron ? State two conditions necessary for the rusting of iron to occur. Explain how, rusting damages iron objects.

State two ways to prevent the rusting of iron.

List in tabular form any three chemical on the basis of which metals and non-metals are differentiated. State two ways to prevent the rusting of iron.

State two necessary conditions for rusting.

LAKHMIR SINGH & MANJIT KAUR-METALS AND NON-METALS-Exercise
  1. How many carats is pure gold ? Why is pure gold not suitable for makin...

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  2. Name one method for the refining of metals.

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  3. State two conditions for the rusting of iron.

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  4. In one method of rust prevention, the iron is not coated with anything...

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  5. Name two allys ofiron.what elements are present in these alloys?

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  6. Give reason for the following: Silver, gold and platinum are used to...

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  7. Which metal becomes black in the presence of hydrogen sulphide gas in ...

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  8. name the gas in air which tarnishes silver articles slowly.

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  9. Silver metal does not combine easily with oxygen but silver jewellery ...

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  10. Write the composition of the alloy called bronze. Give two uses of bro...

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  11. Why does a new aluminium vessel lose shine so soon after use?

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  12. Why do gold ornaments look new even after several years of use?

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  13. Name two metals which are highly resistant to corrosion.

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  14. Which property of 'solder' alloy makes It suitable for welding electri...

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  15. Explain why, arbon cannot reduce oxides of sodium or magnesium.

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  16. Why are the metals like Na,K,Ca and Mg never found in their free state...

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  17. Name one metal each which is extracted by: (a). Reduction with carbo...

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  18. Fill in the following blanks with suitable words: ltbr. (a). The corro...

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  19. How is manganese extracted from manganese dioxide, MnO(2)?Explain with...

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  20. What is a thermite reaction? Explain with the help of an equation.stat...

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